Device and method for treating sewage by using dry strength agent production wastewater

A technology for the production of waste water and dry strength agents, which is applied in multi-stage water treatment, water/sewage treatment, natural water treatment, etc., can solve the problems of high cost and difficult treatment of dry strength agent production waste water, etc. The problem of production wastewater, the effect of close integration

Pending Publication Date: 2022-03-22
ZHEJIANG XINYONG BIOCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a device for treating sewage by using dry-strength agent production wastewater to solve the problem that the current dry-strength agent production wastewater is difficult to process and requires a large cost for treatment

Method used

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  • Device and method for treating sewage by using dry strength agent production wastewater
  • Device and method for treating sewage by using dry strength agent production wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides the structure of a device for producing waste water and treating sewage by using a dry strength agent:

[0029] Such as figure 1 , figure 2 as shown, figure 1 It is a structural schematic diagram of the present invention, figure 2 It is the chemical formula of the components of the dry strength agent wastewater of the present invention. In the present invention, the dry strength agent wastewater refers to the wastewater generated in the process of producing the dry strength agent. The components of the wastewater include water and the accompanying drawings figure 2 One or more of intermediate products and raw materials; the present invention includes a sewage regulating tank 1, a sewage coagulation tank 3, a coagulation sedimentation tank 10 and a biochemical treatment tank 12 connected in sequence through pipelines, and the biochemical treatment tank 12 includes Anaerobic pool 121, A pool 122, and O pool 123 connected in sequence;

[003...

Embodiment 2

[0033] The present embodiment provides the method for utilizing dry strength agent to produce waste water and treat sewage, comprising the following steps:

[0034] S1: Pass the sewage to be treated into the sewage regulating tank 1, introduce the sewage into the first coagulation tank 31 through the sewage pump 2, and adjust the pH of the sewage in the first coagulation tank 31, if the pH of the sewage is acidic , then feed an appropriate amount of 30% liquid alkali to adjust the pH, if the pH of the sewage is alkaline, then feed 15% hydrochloric acid to adjust the pH, and adjust the pH of the sewage in the first coagulation tank 31 to 7-8.5;

[0035] S2: The sewage treated in S1 is further introduced into the second coagulation tank 32, and the polyaluminum chloride is continuously injected into the second coagulation tank 32 for preliminary purification of the sewage, and the mass concentration of the polyaluminum chloride is 1 -4%, the amount added is 3-10% of the sewage w...

Embodiment 3

[0039] The present embodiment provides specific examples, utilize dry strength agent to produce waste water and treat sewage by the device of embodiment 1 and the method of embodiment 2, specific method is as follows:

[0040] S1: Pass the sewage to be treated into the sewage regulating tank 1, wherein the pH of the sewage is 4.28, the COD content is 9218mg / L, the NH3-N content is 280.28mg / L, the TN content is 430mg / L, and the TP The content is 0.63mg / L, and the conductivity is 2110S / m. The above-mentioned sewage is introduced into the first coagulation tank 31 through the sewage pump 2, and an appropriate amount of 30% liquid alkali is introduced to adjust the pH. The pH of the sewage is adjusted to 7-8.5;

[0041] S2: The sewage treated in S1 is further introduced into the second coagulation tank 32, and the polyaluminum chloride is continuously injected into the second coagulation tank 32 for preliminary purification of the sewage, and the mass concentration of the polyalum...

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Abstract

The invention provides a device for treating sewage by using dry strength agent production wastewater, which comprises a sewage regulating tank, a sewage coagulating tank, a coagulative precipitation tank and a biochemical treatment tank which are sequentially communicated through pipelines, and a sewage pump is arranged between the sewage regulating tank and the sewage coagulating tank; the sewage coagulating basin comprises a first coagulating basin, a second coagulating basin and a third coagulating basin which are sequentially communicated, the first coagulating basin is communicated with an acid-base tank, the second coagulating basin is communicated with a polyaluminum chloride tank, and the third coagulating basin is communicated with a dry strength agent production wastewater tank. The invention also provides a sewage treatment method, through the device and the method provided by the invention, the sewage can be effectively flocculated and purified by using the dry strength agent production wastewater, and the device and the method have relatively high commercial value and popularization value.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a device and method for producing waste water and treating sewage by using a dry strength agent. Background technique [0002] Dry strength agent is an important chemical to increase the strength of paper in the papermaking industry. It is a kind of papermaking auxiliary agent. It is formed by the polymerization reaction of acrylamide and various small materials. Many water-soluble ones can form hydrogen bonds with fibers. Combined polymers can all become dry strength agents. Dry strength agents are usually used to compensate for the decrease in paper strength caused by the addition of fillers or low-grade fibers such as recycled fibers. Polyacrylamide (cpolyacrylamids) referred to as PAM, as a common dry strength agent, is a linear polymer and one of the most widely used varieties in water-soluble polymer compounds. Polyacrylamide and other biological Used as an effective flocc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/34
CPCC02F9/00C02F2103/34C02F1/66C02F1/5236C02F2301/08C02F3/30C02F1/56C02F1/54
Inventor 张虎寅庄贤军肖杰
Owner ZHEJIANG XINYONG BIOCHEM
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