阅读说明：本技术 一种污泥活化处理剂及其制备方法 (Sludge activation treatment agent and preparation method thereof ) 是由 尹志福 杜素珍 王�锋 赵楠 谢燕翔 孟瑜 陈宇轩 于 2020-12-17 设计创作，主要内容包括：一种污泥活化处理剂及其制备方法,搅拌釜体中依次加入清水,丙烯酰胺,丙烯酸,加入碳酸钠调节pH值,再加入阳离子聚丙烯酰胺,双十二烷基二甲基氯化铵,十八烷基二甲基苄基氯化铵,轻质碳酸钙粉末,核桃壳粉末,过硫酸钾和亚硫酸钠,每加一次处理剂均搅拌溶解分散均匀,然后倒入反应槽箱中反应,自然反应成为固态后,自然冷却,用粉碎机将固体反应物进行粉碎,用分样筛筛分,收集筛分的颗粒物,即为污泥活化用处理剂；本发明一方面节约成本,另一方面降低了污水处理污泥量的增加,环保效益显著。(A sludge activating treatment agent and its preparation method, add the rinsing sequentially in the stirred tank body, acrylamide, acrylic acid, add sodium carbonate to adjust pH value, add cationic polyacrylamide, didodecyldimethylammonium chloride, octadecyl dimethyl benzyl ammonium chloride, light calcium carbonate powder, walnut shell powder, potassium persulfate and sodium sulfite, stir, dissolve and disperse evenly each time the treatment agent is added, then pour into the reaction tank box and react, after the natural reaction becomes the solid state, cool naturally, pulverize the solid reactant with the comminutor, sieve with the sample sieve, collect the particle material sieved, namely the treatment agent for sludge activation; the invention saves cost on one hand, reduces the increase of sewage treatment sludge amount on the other hand, and has obvious environmental protection benefit.)

1. The treating agent for sludge activation is characterized by comprising the following raw materials in parts by mass: 1-40 parts of acrylamide, 1-40 parts of acrylic acid, 1-40 parts of cationic polyacrylamide, 1-40 parts of didodecyldimethylammonium chloride, 1-40 parts of octadecyl dimethyl benzyl ammonium chloride, 1-40 parts of light calcium carbonate powder with the diameter of 100-2000 meshes, 1-40 parts of walnut shell powder with the diameter of 100-2000 meshes, 0.01-5 parts of potassium persulfate, 0.01-5 parts of sodium sulfite and 100 parts of clear water.

2. A preparation method of a treating agent for sludge activation is characterized by comprising the following steps:

firstly, adding clear water into a reaction kettle, then adding acrylamide, and uniformly stirring, wherein the weight ratio of acrylamide: water (m/m) ═ 1-40: 100, respectively;

step two, adding acrylic acid, stirring uniformly, wherein the acrylic acid: water (m/m) ═ 1-40: 100, respectively;

thirdly, adding sodium carbonate to adjust the pH value to 6.0-11.0;

fourthly, adding cationic polyacrylamide, stirring, dissolving and dispersing uniformly, wherein the cationic degree of the cationic polyacrylamide is 10-80%, the molecular weight of the cationic polyacrylamide is 100-1000 ten thousand, and the weight ratio of the cationic polyacrylamide: water (m/m) ═ 1-40: 100, respectively;

fifthly, adding a certain amount of didodecyldimethylammonium chloride, and uniformly stirring, wherein the proportion of the didodecyldimethylammonium chloride: water (m/m) ═ 1-40: 100, respectively;

sixthly, adding octadecyl dimethyl benzyl ammonium chloride, and uniformly stirring: water (m/m) ═ 1-40: 100, respectively;

seventhly, adding light calcium carbonate powder, wherein the particle diameter of the light calcium carbonate powder is 100-2000 meshes, and the light calcium carbonate powder comprises the following components in percentage by weight: water (m/m) ═ 1-40: 100, respectively;

eighth, adding walnut shell powder, wherein the particle diameter of the walnut shell powder is 100-2000 meshes, and the walnut shell powder: water (m/m) ═ 1-40: 100, respectively;

step nine, adding potassium persulfate, uniformly stirring, wherein the weight ratio of potassium persulfate: water (m/m) ═ 0.01-5: 100, respectively;

step ten, adding sodium sulfite, stirring uniformly, wherein the sodium sulfite: water (m/m) ═ 0.01-5: 100, respectively;

step ten, after stirring evenly, quickly pouring into a prepared reaction tank box, controlling the pouring amount in the tank box to be 5-120 mm high, after pouring, quickly floating, starting a spot heating controller 2 of the tank box, observing whether a heating spot in the reaction tank box reacts, immediately stopping heating once the reaction occurs, after the mixed liquid naturally reacts to be a solid state, naturally cooling, crushing a solid reactant by a crusher, screening by a sample screening sieve, wherein the mesh number of the sample screening sieve is 10-500 meshes, collecting screened particles, spreading, airing, and testing that the water content is not more than 10%, thus obtaining the sludge activation treating agent.

3. The method for preparing a treating agent for sludge activation according to claim 2, comprising the steps of:

firstly, adding clear water into a reaction kettle, then adding acrylamide, and uniformly stirring, wherein the weight ratio of acrylamide: water (m/m) ═ 10-15): 100, respectively;

step two, adding acrylic acid, stirring uniformly, wherein the acrylic acid: water (m/m) ═ 5-10: 100, respectively;

thirdly, adding sodium carbonate to adjust the pH value to 7-8;

and step four, adding cationic polyacrylamide, stirring, dissolving and dispersing uniformly, wherein the cationic degree of the cationic polyacrylamide is 50%, the molecular weight of the cationic polyacrylamide is 300-400 ten thousand, and the weight ratio of the cationic polyacrylamide to the cationic polyacrylamide is as follows: water (m/m) ═ 1 to 3: 100, respectively;

fifthly, adding a certain amount of didodecyldimethylammonium chloride, and uniformly stirring, wherein the proportion of the didodecyldimethylammonium chloride: water (m/m) ═ 3-7: 100, respectively;

sixthly, adding octadecyl dimethyl benzyl ammonium chloride, and uniformly stirring: water (m/m) ═ 2-5: 100, respectively;

and seventhly, adding light calcium carbonate powder, wherein the particle diameter of the light calcium carbonate powder is 1500-2000 meshes, and the light calcium carbonate powder is: water (m/m) ═ 12-20: 100, respectively;

eighth, adding walnut shell powder, wherein the particle diameter of the walnut shell powder is 1500-2000 meshes, and the walnut shell powder: water (m/m) ═ 3-7: 100, respectively;

step nine, adding potassium persulfate, uniformly stirring, wherein the weight ratio of potassium persulfate: water (m/m) ═ 0.03-0.06): 100

Step ten, adding sodium sulfite, stirring uniformly, wherein the sodium sulfite: water (m/m) ═ 0.02 to 0.06): 100, respectively;

step ten, after stirring evenly, quickly pouring into a prepared reaction tank box, controlling the pouring amount in the tank box to be 100-120 mm high, after pouring, quickly floating, starting a spot heating controller (2) of the tank box, observing whether a heating spot in the reaction tank box reacts, immediately stopping heating once the reaction occurs, after the mixed liquor naturally reacts to be a solid state, naturally cooling, crushing a solid reactant by a crusher, screening by a sample screening sieve, wherein the mesh number of the sample screening sieve is 200-300 meshes, collecting screened particles, spreading and airing, and testing that the water content is not more than 10%, thereby obtaining the sludge activation treating agent.

4. The method for preparing the treating agent for sludge activation according to claim 2 or 3, wherein the reaction tank box comprises a box body (1), the box body (1) is square or rectangular, the top of the box body (1) is open, the depth of the box body is 100 mm-200 mm, a point heater (2) is arranged at the distance of 200 mm-1000 mm from a grid, and the point heater (2) is connected with a control switch (3).

5. The method of claim 4, wherein the depth of the tank (1) is 120mm to 150 mm.

6. The method for preparing a treating agent for sludge activation according to claim 4, wherein the distance between the grids of the spot heaters (2) is 600mm to 900 mm.

Technical Field

The invention relates to an oilfield sewage dosing purification treatment process in an oilfield production process, in particular to a sludge activation treatment agent in a static settlement sewage treatment technology for sludge activation purification and a preparation method thereof.

Background

Along with the development of oil fields, most of domestic oil fields enter a middle-high water producing period, more and more oil well produced liquid separated water (sewage) is generated, meanwhile, the formation pressure is continuously exhausted, the oil well produced liquid separated water needs to be purified, and oil layers of different oil wells are injected after reaching standards so as to solve the problem that the oil well yield is reduced due to the reduction of the oil layer pressure in the exploitation process.

In the prior oil field production, the purification treatment of sewage can achieve the purification purpose only by using a large amount of inorganic and organic polymers and other chemical agents, particularly, a new sewage treatment technology utilizes sludge recycling as an important part for developing a purification treatment agent, but because the sludge has low density and weak adsorbability, the sludge cannot be directly used as the purification treatment agent, and the sludge needs to be activated and the density of the sludge needs to be improved, so that the capture capacity and the sedimentation effect of the sludge are improved.

Disclosure of Invention

In order to solve the problems of large sludge amount in oil field sewage treatment and high sludge harmless utilization and discharge cost, the invention provides a sludge activation treatment agent and a preparation method thereof.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a treating agent for sludge activation comprises the following raw material components in parts by mass: 1-40 parts of acrylamide, 1-40 parts of acrylic acid, 1-40 parts of cationic polyacrylamide, 1-40 parts of didodecyldimethylammonium chloride, 1-40 parts of octadecyl dimethyl benzyl ammonium chloride, 1-40 parts of light calcium carbonate powder with the diameter of 100-2000 meshes, 1-40 parts of walnut shell powder with the diameter of 100-2000 meshes, 0.01-5 parts of potassium persulfate, 0.01-5 parts of sodium sulfite and 100 parts of clear water.

A preparation method of a treating agent for sludge activation comprises the following steps:

firstly, adding clear water into a reaction kettle, then adding acrylamide, and uniformly stirring, wherein the weight ratio of acrylamide: water (m/m) ═ 1-40: 100, respectively;

step two, adding acrylic acid, stirring uniformly, wherein the acrylic acid: water (m/m) ═ 1-40: 100, respectively;

thirdly, adding sodium carbonate to adjust the pH value to 6.0-11.0;

fourthly, adding cationic polyacrylamide, stirring, dissolving and dispersing uniformly, wherein the cationic degree of the cationic polyacrylamide is 10-80%, the molecular weight of the cationic polyacrylamide is 100-1000 ten thousand, and the weight ratio of the cationic polyacrylamide: water (m/m) ═ 1-40: 100, respectively;

fifthly, adding a certain amount of didodecyldimethylammonium chloride, and uniformly stirring, wherein the proportion of the didodecyldimethylammonium chloride: water (m/m) ═ 1-40: 100, respectively;

sixthly, adding octadecyl dimethyl benzyl ammonium chloride, and uniformly stirring: water (m/m) ═ 1-40: 100, respectively;

seventhly, adding light calcium carbonate powder, wherein the particle diameter of the light calcium carbonate powder is 100-2000 meshes, and the light calcium carbonate powder comprises the following components in percentage by weight: water (m/m) ═ 1-40: 100, respectively;

eighth, adding walnut shell powder, wherein the particle diameter of the walnut shell powder is 100-2000 meshes, and the walnut shell powder: water (m/m) ═ 1-40: 100, respectively;

step nine, adding potassium persulfate, uniformly stirring, wherein the weight ratio of potassium persulfate: water (m/m) ═ 0.01-5: 100, respectively;

step ten, adding sodium sulfite, stirring uniformly, wherein the sodium sulfite: water (m/m) ═ 0.01-5: 100, respectively;

step ten, after stirring evenly, quickly pouring into a prepared reaction tank box, controlling the pouring amount in the tank box to be 5-120 mm high, after pouring, quickly floating, starting a spot heating controller 2 of the tank box, observing whether a heating spot in the reaction tank box reacts, immediately stopping heating once the reaction occurs, after the mixed liquid naturally reacts to be a solid state, naturally cooling, crushing a solid reactant by a crusher, screening by a sample screening sieve, wherein the mesh number of the sample screening sieve is 10-500 meshes, collecting screened particles, spreading, airing, and testing that the water content is not more than 10%, thus obtaining the sludge activation treating agent.

A preparation method of a treating agent for sludge activation comprises the following steps:

firstly, adding clear water into a reaction kettle, then adding acrylamide, and uniformly stirring, wherein the weight ratio of acrylamide: water (m/m) ═ 10-15): 100, respectively;

step two, adding acrylic acid, stirring uniformly, wherein the acrylic acid: water (m/m) ═ 5-10: 100, respectively;

thirdly, adding sodium carbonate to adjust the pH value to 7-8;

and step four, adding cationic polyacrylamide, stirring, dissolving and dispersing uniformly, wherein the cationic degree of the cationic polyacrylamide is 50%, the molecular weight of the cationic polyacrylamide is 300-400 ten thousand, and the weight ratio of the cationic polyacrylamide to the cationic polyacrylamide is as follows: water (m/m) ═ 1 to 3: 100, respectively;

fifthly, adding a certain amount of didodecyldimethylammonium chloride, and uniformly stirring, wherein the proportion of the didodecyldimethylammonium chloride: water (m/m) ═ 3-7: 100, respectively;

sixthly, adding octadecyl dimethyl benzyl ammonium chloride, and uniformly stirring: water (m/m) ═ 2-5: 100, respectively;

and seventhly, adding light calcium carbonate powder, wherein the particle diameter of the light calcium carbonate powder is 1500-2000 meshes, and the light calcium carbonate powder is: water (m/m) ═ 12-20: 100, respectively;

eighth, adding walnut shell powder, wherein the particle diameter of the walnut shell powder is 1500-2000 meshes, and the walnut shell powder: water (m/m) ═ 3-7: 100, respectively;

step nine, adding potassium persulfate, uniformly stirring, wherein the weight ratio of potassium persulfate: water (m/m) ═ 0.03-0.06): 100

Step ten, adding sodium sulfite, stirring uniformly, wherein the sodium sulfite: water (m/m) ═ 0.02 to 0.06): 100, respectively;

step ten, after stirring evenly, quickly pouring into a prepared reaction tank box, controlling the pouring amount in the tank box to be 100-120 mm high, after pouring, quickly floating, starting a spot heating controller 2 of the tank box, observing whether a heating spot in the reaction tank box reacts, immediately stopping heating once the reaction occurs, after the mixed liquid naturally reacts to be a solid state, naturally cooling, crushing a solid reactant by a crusher, screening by a sample screening sieve, wherein the mesh number of the sample screening sieve is 200-300 meshes, collecting screened particles, spreading, airing, and testing that the water content is not more than 10%, thus obtaining the sludge activation treating agent.

The reaction tank comprises a tank body 1, wherein the tank body 1 is square or rectangular, the top of the tank body 1 is open, the depth of the tank body 1 is 100-200 mm, a point heater 2 is arranged at the bottom of the tank body 1 at a distance of 200-1000 mm from the grid, and the point heater 2 is connected with a control switch 3.

The depth of the box body 1 is 120 mm-150 mm.

The distance between the grids of the point heaters 2 is 600 mm-900 mm.

The invention has the beneficial effects that:

the sludge activating treatment agent prepared by the invention is characterized in that a layer of organic molecular membrane containing cationic macromolecular polyacrylamide and hydrophilic cationic surfactant is coated on the surface of the mixture particles of light calcium carbonate powder particles and walnut shell powder particles, the organic molecular membrane is added into sludge to flocculate the sludge into large particles to form a flocculating constituent with a net structure, the flocculating constituent has strong adsorbability, can efficiently capture suspended substance micro particles and oil micro particles in sewage and aggregate the particles to form high-density agglomerated particles, and can quickly settle and separate, thereby effectively purifying the sewage. Meanwhile, the newly generated agglomerated particles can be continuously recycled, and the same purification effect is achieved.

The sludge is free of cost, and is regenerated and recycled, so that the application of purification treatment agents such as polyaluminium chloride and polyacrylamide can be replaced when sewage is treated, on one hand, the cost is saved, on the other hand, the increase of the sludge amount in sewage treatment is reduced, and the environmental protection benefit is remarkable.

Drawings

FIG. 1 is a schematic view showing the structure of a reaction tank of the present invention.

FIG. 2 is a flow chart of a sewage treatment process of a Wanpi bay sewage treatment station in an embodiment of the greening stone needle oil production plant.

FIG. 3 is a flow chart of the sewage treatment process of the pine forest sewage treatment station in the oil production plant of the second southern mud bay according to the embodiment.

FIG. 4 is a flow chart of the sewage treatment process in the Wanjiawan sewage treatment station of the oil production plant of Sanxingzhuan.

Detailed Description

Example one

A preparation method of a treating agent for sludge activation comprises the following steps:

according to the mass parts, firstly, 100 parts of clear water and 11.5 parts of acrylamide are added into a stirring kettle body, and stirred for 5min after uniform stirring, dissolution and dispersion are carried out; then, sequentially adding 6.5 parts of acrylic acid, uniformly stirring and dispersing, and stirring for 5 min; adding sodium carbonate to adjust the pH value to 7.3; adding 1.7 parts of cationic polyacrylamide (the cationic degree of the cationic polyacrylamide is 50%, and the molecular weight is 400 ten thousand), stirring to dissolve and disperse uniformly, and stirring for 10 min; adding 5 parts of didodecyldimethylammonium chloride, stirring to dissolve and disperse uniformly, and stirring for 10 min; adding 3 parts of octadecyl dimethyl benzyl ammonium chloride, stirring to dissolve and disperse uniformly, and stirring for 10 min; adding 17 parts of 1100-mesh light calcium carbonate powder, and stirring for 10 min; adding 5 parts of walnut shell powder, and stirring for 10 min; adding 0.05 part of potassium persulfate, stirring, dissolving and dispersing uniformly; adding 0.05 part of sodium sulfite, stirring, dissolving and dispersing uniformly, then quickly pouring into a prepared reaction tank box, controlling the pouring amount in the tank box to be 120mm high, after pouring, starting a spot heating controller 2 of the tank box, observing whether a heating spot in the reaction tank box reacts, immediately stopping heating once the reaction occurs, after all the solid phase in the reaction tank box is solidified, naturally cooling, crushing the solid reactant by a crusher, screening by a 200-mesh sample sieve, collecting screened particles, spreading and airing, and testing the water content to be 8.7 percent, namely the sludge activation treating agent.

Field application and effect:

the application place is as follows: a sewage treatment station of Wangpiwan of Qinghua Bian oil production factory, as shown in figure 2, is a sewage treatment process flow of the Wangpiwan sewage treatment station of the Qinghua Bian oil production factory.

Properties of sewage from Wanpi sewage treatment station in Qinghua Stone needle oil production plant: oil content 860mg/L, suspended matter content 1040 mg/L.

Preparing a sludge activation treating agent and designing the dosing concentration: adding sludge into a mixing device 1, adding 35% of sludge activation treatment agent (sludge-m/v), uniformly mixing, adding the sludge activation treatment agent by a dosing pump, adding the sludge activation treatment agent in an amount of 1% (v/v) of the flow of sewage, dosing by the mixing device 1, preparing the mixing device 2 according to the mixing device 1, after the mixing device 1 is completely added, dosing by the mixing device 2, continuously preparing by the mixing device 1, after the mixing device 2 is completely added, using the mixing device 1, circulating in such a way, testing the content of the sludge activation treatment agent in the sludge at the inlet of the mixing device to be 5% -6%, circularly using the sludge, enabling the circulating sludge to enter a dosing pump through the mixing device 1, adjusting the discharge capacity of the dosing pump to be 3% -4% of the flow of the sewage, and when the concentration of the sludge activation treatment agent in the sludge at the inlet of the mixing device 1 is detected to be lower than 3%, the mixing device 2 is used for preparing a supplementary sludge activating treatment agent, and the circulation is carried out, when the sludge amount in the settling tank exceeds the requirement of the device, the excess sludge is discharged into a sludge tank.

The property of the filtered sewage after treatment is as follows: the oil content is 5.2mg/L (15 mg/L required by the standard), and the suspended matter content is 1.2mg/L (2 mg/L required by the standard). The oil content and the suspended matter content of the filtered sewage can stably reach the standard.

The effect of the original sewage treatment technology is as follows: the average oil content was 21.4mg/L (15 mg/L as required by the standards) and the average suspended matter content was 3.5mg/L (2 mg/L as required by the standards). The treated filtered sewage can not stably reach the standard, and all indexes are seriously exceeded.

Example two

According to the mass parts, firstly, 100 parts of clear water and 14 parts of acrylamide are added into a stirring kettle body, and stirred for 5min after uniform stirring, dissolution and dispersion are carried out; then, sequentially adding 7.3 parts of acrylic acid, uniformly stirring and dispersing, and stirring for 5 min; adding sodium carbonate to adjust the pH value to 7.6; adding 2.2 parts of cationic polyacrylamide (the cationic degree of the cationic polyacrylamide is 50%, and the molecular weight is 350 ten thousand), stirring to dissolve and disperse uniformly, and stirring for 10 min; adding 6 parts of didodecyldimethylammonium chloride, stirring to dissolve and disperse uniformly, and stirring for 10 min; adding 4 parts of octadecyl dimethyl benzyl ammonium chloride, stirring to dissolve and disperse uniformly, and stirring for 10 min; adding 15 parts of 1100-mesh light calcium carbonate powder, and stirring for 10 min; adding 6 parts of walnut shell powder, and stirring for 10 min; adding 0.06 part of potassium persulfate, stirring, dissolving and dispersing uniformly; adding 0.05 part of sodium sulfite, stirring, dissolving and dispersing uniformly, then quickly pouring into a prepared reaction tank box, controlling the pouring amount in the tank box to be 100mm high, after pouring, starting a spot heating controller 2 of the tank box, observing whether a heating spot in the reaction tank box reacts, immediately stopping heating once the reaction occurs, after all the solid phase in the reaction tank box is solidified, naturally cooling, crushing the solid reactant by a crusher, screening by a 300-mesh sample-dividing sieve, collecting screened particles, spreading and airing, and testing the water content to be 9.3 percent, namely the sludge activation treating agent.

Field application and effect:

the application place is as follows: a sewage treatment station for pine trees of an oil production plant in south mud bay, and referring to fig. 3, a sewage treatment process flow of the sewage treatment station for the pine trees of the oil production plant in south mud bay.

Sewage properties of a pine forest sewage treatment station in a southern mud bay oil production plant: the oil content was 1360mg/L and the suspended matter content was 1520 mg/L.

Preparing a sludge activation treating agent and designing the dosing concentration: adding sludge into a mixing device 1, adding 45% of sludge activation treatment agent (sludge-m/v), uniformly mixing, adding by a dosing pump, wherein the adding amount is 2% (v/v) of the sewage flow, dosing by the mixing device 1, preparing by the mixing device 2 according to the mixing device 1, after the mixing device 1 is completely added, dosing by the mixing device 2, continuously preparing by the mixing device 1, after the mixing device 2 is completely added, using the mixing device 1, circulating in such a way, testing when the content of the sludge activation treatment agent in the sludge at the inlet of the mixing device reaches 6% -7%, circularly using the sludge, enabling the circulated sludge to enter a dosing pump through the mixing device 1, adjusting the discharge capacity of the dosing pump to be 4% -5% of the sewage flow, and when the concentration of the sludge activation treatment agent in the sludge at the inlet of the mixing device 1 is detected to be lower than 4%, the mixing device 2 is used for preparing a supplementary sludge activating treatment agent, and the circulation is carried out, when the sludge amount in the settling tank exceeds the requirement of the device, the excess sludge is discharged into a sludge tank.

The property of the filtered sewage after treatment is as follows: the oil content is 4.3mg/L (10 mg/L required by the standard), and the suspended matter content is 1.8mg/L (2 mg/L required by the standard). The oil content and the suspended matter content of the filtered sewage can stably reach the standard.

The effect of the original sewage treatment technology is as follows: the average oil content was 16.6mg/L (standard requirement 10mg/L) and the average suspended matter content was 4.5mg/L (standard requirement 2 mg/L). The treated filtered sewage can not stably reach the standard, and all indexes are seriously exceeded.

EXAMPLE III

According to the mass parts, firstly, 100 parts of clear water and 18 parts of acrylamide are added into a stirring kettle body, and stirred for 5min after uniform stirring, dissolution and dispersion are carried out; then sequentially adding 9.5 parts of acrylic acid, uniformly stirring and dispersing, and stirring for 5 min; adding sodium carbonate to adjust the pH value to 7.4; adding 2.5 parts of cationic polyacrylamide (the cationic degree of the cationic polyacrylamide is 50%, and the molecular weight is 350 ten thousand), stirring to dissolve and disperse uniformly, and stirring for 10 min; adding 8 parts of didodecyldimethylammonium chloride, stirring to dissolve and disperse uniformly, and stirring for 10 min; adding 6 parts of octadecyl dimethyl benzyl ammonium chloride, stirring to dissolve and disperse uniformly, and stirring for 10 min; adding 17 parts of 1100-mesh light calcium carbonate powder, and stirring for 10 min; adding 5.5 parts of walnut shell powder, and stirring for 10 min; adding 0.08 part of potassium persulfate, stirring, dissolving and dispersing uniformly; adding 0.07 part of sodium sulfite, stirring, dissolving and dispersing uniformly, then quickly pouring into a prepared reaction tank box, controlling the pouring amount in the tank box to be 110mm high, after pouring, starting a spot heating controller 2 of the tank box, observing whether a heating spot in the reaction tank box reacts, immediately stopping heating once the reaction occurs, after all the solid phase in the reaction tank box is solidified, naturally cooling, crushing the solid reactant by a crusher, screening by a 250-mesh sample sieve, collecting screened particles, spreading and airing, and testing the water content to be 9.7 percent, namely the sludge activation treating agent.

Field application and effect:

the application place is as follows: referring to fig. 4, the wastewater treatment process flow of the wang jiawan wastewater treatment station of the xingchuan oil production plant is shown.

The properties of sewage from Wanjiawan sewage treatment station of Xingzchuan oil production plant: the oil content was 1360mg/L and the suspended matter content was 1520 mg/L.

Preparing a sludge activation treating agent and designing the dosing concentration: adding sludge into a mixing device 1, adding 40% of sludge activation treatment agent (the sludge is m/v), uniformly mixing, adding by a dosing pump, wherein the adding amount is 1.5% (v/v) of the sewage flow, dosing by the mixing device 1, preparing by the mixing device 2 according to the mixing device 1, after the mixing device 1 is completely added, dosing by the mixing device 2, continuously preparing by the mixing device 1, after the mixing device 2 is completely added, dosing by the mixing device 1, circulating in such a way, testing when the content of the sludge activation treatment agent in the sludge at the inlet of the mixing device reaches 5% -6%, circularly using the sludge, enabling the circulating sludge to enter a dosing pump through the mixing device 1, adjusting the dosing discharge capacity to be 3.5% -4.5% of the sewage flow, and when detecting that the concentration of the sludge activation treatment agent in the sludge at the inlet of the mixing device 1 is lower than 3.5%, the mixing device 2 is used for preparing a supplementary sludge activating treatment agent, and the circulation is carried out, when the sludge amount in the settling tank exceeds the requirement of the device, the excess sludge is discharged into a sludge tank.

The property of the filtered sewage after treatment is as follows: the oil content is 6.8mg/L (10 mg/L required by the standard), and the suspended matter content is 2.3mg/L (3 mg/L required by the standard). The oil content and the suspended matter content of the filtered sewage can stably reach the standard.

The effect of the original sewage treatment technology is as follows: the average oil content was 13.7mg/L (standard requirement 10mg/L) and the average suspended matter content was 5.1mg/L (standard requirement 3 mg/L). The treated filtered sewage can not stably reach the standard, and all indexes are seriously exceeded.