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A treatment agent for pulp and paper wastewater, its preparation method and treatment process

A treatment process and treatment agent technology, which is applied in water treatment parameter control, process wastewater treatment, multi-stage water treatment, etc. The effect of reducing processing stress

Active Publication Date: 2021-07-06
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the problems existing in the above-mentioned prior art, the present invention provides a treatment agent for pulp and paper wastewater, which can solve the problems of poor treatment efficiency and high cost of pulp and paper wastewater

Method used

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  • A treatment agent for pulp and paper wastewater, its preparation method and treatment process

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preparation example Construction

[0048] In addition, the present invention also provides a preparation method of a treatment agent for pulp and paper wastewater, using the following steps:

[0049] 1) Prepare a composite material with a nano-microspherical structure as a carrier;

[0050] 2) Collect the Bacillus subtilis that was separated, purified and cultivated for several days, and use a gentle method of freeze-thawing and ultrasonic crushing to obtain the lysate of the Bacillus subtilis, and wash it with pure water for later use;

[0051] 3) Disperse the composite material with nano-microspherical structure obtained in step 1) into a phosphate buffer solution with a pH of 6-9 to form a low-viscosity solution, wherein the amount of the composite material is 0.2-2% of the mass of the phosphate buffer solution. %, then add the lysate obtained in step 2), the amount of the lysate added is 0.1 to 10% of the phosphate buffer mass, stirred at room temperature for 2 to 4 hours, and passed through a 200 to 400 me...

Embodiment 1

[0067] A treatment agent for pulp and paper wastewater, comprising nanozyme POEMGA, and activator WRLL and activator BOJF for activating nanozyme POEMGA, wherein the activator WRLL adopts dihydrogen phosphate, and the activator BOJF adopts ammonium salt;

[0068] Above-mentioned treating agent is prepared by the following steps:

[0069] 1) Using the existing patent "a composite material and its preparation method and its application in sewage biochemical treatment" (application number is CN201710784101.6), the composite material with nano-microspherical structure is prepared as the carrier of the present invention; for example, using

[0070] a) 100 grams of sodium silicate, 30 grams of clay (purchased from Qingdao Wanhong Mining Co., Ltd.), 30 grams of iron oxide (Fe 2 o 3 ), 30 grams of alumina (Al 2 o 3 ), 10ml of concentrated hydrochloric acid (commercially available) were mixed evenly, and the airtight reaction was carried out at 120°C for 6 hours;

[0071] b) Mix th...

Embodiment 2

[0079] A preparation method for pulp and paper wastewater treatment agent, step 1), step 2) are the same as the steps in Example 1;

[0080] In step 3), the composite material with nano-microspherical structure obtained in step 1) is dispersed into a phosphate buffer with a pH of 6 to form a low-viscosity solution, wherein the amount of the composite is 1% of the quality of the phosphate buffer. %, then add the cleavage product obtained in step 2), the amount of the cleavage product is 5% of the phosphate buffer mass, stir at room temperature for 3h, pass through a 300 mesh screen after low-frequency ultrasound, measure the encapsulation efficiency and pack it into a specific water processing equipment.

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Abstract

The invention discloses a treatment agent for pulp and paper wastewater, a preparation method and a treatment process thereof, belonging to the technical field of sewage treatment, including nanozyme POEMGA, activator WRLL and activator BOJF for activating nanozyme POEMGA; the nanozyme POEMGA is activated before use, and the activator WRLL and the activator BOJF are the required agents for activating the original POEMGA respectively; the activator WRLL is also the required agent for activating the transitional state POEMGA to the activated state POEMGA. The invention is easy to use, greatly reduces the indicators such as COD, BOD and SS in the extremely difficult-to-treat pulp and paper wastewater, improves work efficiency, and is suitable for large-scale use in wastewater treatment workshops of pulp and paper enterprises.

Description

technical field [0001] The invention relates to a treatment agent for pulp and paper wastewater, a preparation method and a treatment process thereof, and belongs to the technical field of sewage treatment. Background technique [0002] The waste water discharge of the paper industry is large, the water pollution is extremely serious, and it is very destructive to the ecology. It is one of the "six major" public hazards recognized in the world. The paper industry is a traditional large water user and one of the important sources of water pollution. The pollution to the environment is mainly waste water, waste gas, waste residue, noise and stench, among which the pollution of waste water is the most serious and complex. Enterprises need to discharge a large amount of production wastewater in the production process. It is extremely important for the development of enterprises to plan for the recycling of wastewater after treatment to achieve zero discharge and avoid environmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F9/14C02F103/28
CPCC02F1/001C02F1/52C02F1/5263C02F3/342C02F9/00C02F11/122C02F2103/28C02F2209/08C02F2209/10C02F2301/046C02F2301/08
Inventor 董磊
Owner NANJING UNIV
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