CN101037281A

CN101037281A - Zero-discharging treatment method of regenerated waste water for paper making

Info

Publication number: CN101037281A
Application number: CNA2007100348486A
Authority: CN
Inventors: 程昔煊
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-27
Filing date: 2007-04-27
Publication date: 2007-09-19
Anticipated expiration: 2027-04-27
Also published as: CN100509659C

Abstract

The invention discloses a disposal method of no-discharge of regenerating papermaking waste water including following steps: 1. high pressure timing washing in the papermaking plant; 2. in the papermaking sizing process, adding a content of 10%, a concentration of 25% polyacrylamide solvent, discharging the waste water to deposit. The residual upper part is chemical decomposition by adding 1% aluminium chloride in the chemolysis pool and delaminates rotatably; 3. the upper side of the chemolysis pool is the spumescence suspended matters, the mid is the clean water with a little yellow, flowing into the aerating depositing pool to aerate, then adding 0.01% aluminium sulphate for a further decomposition deposition, adding natural water to aerate biologically after neutralizing by adding 0.01% limestone to make it become active water, then pumping it into plant for recycling, the bottom sludge flowing into sludge drying pool to produce complex fertilizer after photosynthetic drying process by solar energy. The invention provides a simple technics, a convenient operation, a low energy cost, a wholly closed cycle with and without three waste.

Description

A kind of treatment process of regenerated waste water for paper making zero release

One, technical field:

The present invention relates to a kind of treatment process of regenerated waste water for paper making discharging.

Two, background technology:

At present regenerated papermaking has become the important component part of national recycling economy, but the water requirement of regenerated papermaking is big, and quantity of wastewater effluent is also big, severe contamination ecotope.The sewage treatment facility that international and domestic paper plant adopts all is that investment is big, and apparatus expensive, running cost are very high, because concentration of wastewater is too high, and externally discharged waste water instability up to standard like this, enterprise can't bear.Also have the disclosed sewage water treatment method of ZL99115716.8, there are the following problems: 1, do not set about from beginning of production, only pay attention to sewage disposal, do not solve sewage emissions amount and concentration; 2, sewage disposal running cost height; 3, treatment process is continuous non-interrupted method, and the medicine injected volume is big.

Three, summary of the invention:

The object of the present invention is to provide a kind of raising waste paper utilization rate, reduce the workshop water consumption, the treatment process of the regenerated waste water for paper making zero release that running cost is low.

Main contents of the present invention and technical characterictic are: a kind of treatment process of regenerated waste water for paper making zero release is characterized in that may further comprise the steps: 1. will wash at machine room and adopt high pressure regularly to wash; 2. in copying the process of paper sizing be 25% Polyscrylamide solvent by the per 1000 tons concentration that add content 10 ‰, the sewage of discharging precipitates, underclad portion is directly used in slurrying, and the residue top section adds consumption in the decomposition pond be that 1 ‰ aluminum chloride carries out decomposition, the rotation layering; 3. decomposing pool top is the spumescence suspended substance, the middle level is slightly yellow cleaning water, flow into sudden and violent gas settling tank and carry out sudden and violent gas, after add 0.1 ‰ Tai-Ace S 150, make and further decompose precipitation, add again after 0.1 ‰ Wingdale neutralizes, add nature water and carry out the sudden and violent gas of biology, make it to become active water, pump into water tower and enter the workshop recycle, bottom mud flows into the drying sludge pond and utilizes sun power to carry out making composite fertilizer after the photosynthetic drying treatment.

The present invention reduces the workshop water consumption, and utilizes the biological photosynthesis of chemical molecular to handle, and can be widely used in the regenerated papermaking industry, has the advantage of low cost, high repayment.

Four, embodiment:

The invention will be further described below in conjunction with specific embodiment:

1, uses the machine room purging method instead high pressure by original continuous flushing and regularly wash, reduce water consumption; 2, in copying the process of paper sizing by the per 1000 tons retention filtration adjuvant (being that concentration is 25% Polyscrylamide solvent) that add content 10 ‰, fine-fibered is flocculated, attached to together entering the woollen blanket starching on the paper-making fibre, fiber fines is fully used, make the concentration of wastewater loss of weight of discharge, reduce the sewage disposal load, improve paper pulp utilization ratio 4%, the raw materials cost of enterprise is obviously reduced, the sewage of discharging precipitates, the underclad portion the inside also has the part fiber, directly pump into slip house and be used for slurrying, the residue top section flows into pending pond, after pending pond is full, pumps into the decomposition pond and carries out decomposition, with 1: 100 solution of polymerize aluminum chloride proportioning, the polymerize aluminum chloride consumption is 1 ‰, utilizes round decomposition pond to make it to rotatablely move materials such as the out of use fiber integral body that forms of flocculating is sunk, and the floating outstanding thing that it can not sink is formed above spumescence floats over; 3, decomposing pool top is the spumescence suspended substance, the middle level is slightly yellow cleaning water, flow into sudden and violent gas settling tank and carry out sudden and violent gas, after add 0.1 ‰ Tai-Ace S 150, make and further decompose precipitation, after neutralizing with 0.1 ‰ Wingdale again, infiltrate suitable natural water and carry out the sudden and violent gas of biology, make it to become active water, pump into water tower and enter the workshop recycle.Bottom mud flows into the drying sludge pond and utilizes sun power to carry out making composite fertilizer after the photosynthetic drying treatment, this invention utilizes the biological photosynthesis facture of chemical molecular to be widely used in the regenerated papermaking industry, no matter its scale, it has the advantage of low cost, high repayment, popularization that can be general.

Claims

1, a kind of treatment process of regenerated waste water for paper making zero release is characterized in that may further comprise the steps: 1. will wash at machine room and adopt high pressure regularly to wash; 2. in copying the process of paper sizing be 25% Polyscrylamide solvent by the per 1000 tons concentration that add content 10 ‰, the sewage of discharging precipitates, underclad portion is directly used in slurrying, and the residue top section adds consumption in the decomposition pond be that 1 ‰ aluminum chloride carries out decomposition, the rotation layering; 3. decomposing pool top is the spumescence suspended substance, the middle level is slightly yellow cleaning water, flow into sudden and violent gas settling tank and carry out sudden and violent gas, after add 0.1 ‰ Tai-Ace S 150, make and further decompose precipitation, add again after 0.1 ‰ Wingdale neutralizes, add nature water and carry out the sudden and violent gas of biology, make it to become active water, pump into water tower and enter the workshop recycle, bottom mud flows into the drying sludge pond and utilizes sun power to carry out making composite fertilizer after the photosynthetic drying treatment.