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Straw filler for sewage treatment and preparation method thereof

A technology for sewage treatment and straw, applied in biological water/sewage treatment, water/sludge/sewage treatment, special compound water treatment, etc., can solve the problems of high cost, high polymer cost, and release can not be effectively controlled.

Pending Publication Date: 2021-05-07
华设设计集团环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a hidden danger of excessive dosing of traditional carbon sources, which will affect the quality of effluent water. It is necessary to precisely control the dosing process, and the cost is high. The price of synthetic polymers is also high. The carbon source of natural cellulose substances is released. Can't get effective control problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0023] This implementation prepares straw fillers for sewage treatment. Rapeseed straws are used as the skeleton, zeolite particles with a particle size of 5-10 mm are added, impregnated with PVA pre-crosslinking liquid, mixed and solidified for papermaking. The specific preparation method includes the following steps:

[0024] Step 1: washing the rape stalks with water, drying and crushing them into rape stalk particles with a particle size of 20 mm.

[0025] Step 2: Add 20 parts by weight of polyvinyl alcohol 1788 into 80 parts by weight of water, stir, and raise the temperature to 95° C. to form a stable solution.

[0026] Step 3: Add 100 parts by weight of rapeseed stalk particles, 10 parts by weight of zeolite particles, 30 parts by weight of hydrochloric acid and 40 parts by weight of formaldehyde into the stable PVA solution, and mix evenly by mechanical stirring.

[0027] Step 4: Use a 5-mesh filter to make paper. The negative pressure under the filter removes the exce...

specific Embodiment 2

[0029] This implementation prepares straw-based fillers for sewage treatment, using wheat straw as the skeleton, adding quartz sand particles with a particle size of 5-10mm, impregnating PVA pre-crosslinking liquid, and mixing paper to solidify. The specific preparation method includes the following steps:

[0030] Step 1, washing the wheat straw with water, drying and crushing into wheat straw particles with a particle diameter of 5 mm.

[0031] Step 2: Add 30 parts by weight of polyvinyl alcohol 1799 to 120 parts by weight of water, stir, and raise the temperature to 95° C. to form a stable solution.

[0032] Step 3: Add 100 parts by weight of wheat straw particles, 20 parts by weight of quartz sand particles, 30 parts by weight of sulfuric acid and 15 parts by weight of glutaraldehyde into the stable PVA solution, and mix evenly by mechanical stirring.

[0033] Step 4. Use a 5-mesh filter to make paper. The negative pressure under the filter removes the excess slurry and tr...

specific Embodiment 3

[0035] This implementation prepares straw-based fillers for sewage treatment, using rice straw as the skeleton, adding slag particles with a particle size of 5-10mm, impregnating PVA pre-crosslinking liquid, and mixing and curing papermaking. The specific preparation method includes the following steps:

[0036] Step 1: Washing, drying and crushing the rice straw into rice straw particles with a particle size of 40 mm.

[0037] Step 2: Add 20 parts by weight of polyvinyl alcohol 2088 into 180 parts by weight of water, stir, and raise the temperature to 95° C. to form a stable solution.

[0038] Step 3: Add 100 parts by weight of rice straw granules, 15 parts by weight of slag granules, 40 parts by weight of nitric acid and 20 parts by weight of formaldehyde into the stable PVA solution, and mix them uniformly by mechanical stirring.

[0039] Step 4: Use a 5-mesh filter to make paper. The negative pressure under the filter removes the excess slurry and transports it to a heatin...

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Abstract

The invention discloses a preparation method of a straw filler for sewage treatment. The preparation method comprises the following steps: step a, washing crop straws with water, drying, and crushing into straw particles; step b, adding polyvinyl alcohol into water, stirring, and heating to form a stable solution; step c, adding straw particles, inorganic mineral particles, a catalyst and a cross-linking agent into the stable solution, and uniformly stirring and mixing; and step d, performing papermaking forming by adopting a filter screen, performing negative pressure extraction on redundant pulp under the filter screen, then conveying the pulp to a heating environment for curing, and cutting the pulp into cubic blocks. The invention also discloses the straw filler which is prepared by adopting the preparation method. According to the straw filler for sewage treatment and the preparation method of the straw filler, crop waste is utilized in a high-value mode, meanwhile, the function of slowly releasing a carbon source is achieved, additional carbon sources can be reduced in the sewage treatment process, the filler is good in hydrophilic performance and high in porosity, attachment and survival of microorganisms are facilitated, and the sewage treatment effect is ensured.

Description

technical field [0001] The invention relates to a straw filler for sewage treatment and a preparation method thereof, in particular to a straw filler for water treatment with functions of microbial attachment carrier and slow release of carbon source and a preparation method thereof, belonging to the technical field of auxiliary materials for sewage treatment. Background technique [0002] With the gradual improvement of nitrogen discharge standards in sewage discharge, there are problems such as insufficient carbon sources in denitrification and denitrification in sewage treatment, and are facing huge challenges. Generally, denitrification external carbon sources can be divided into two categories, one is traditional carbon sources, mainly liquid organic matter such as methanol, ethanol, acetic acid, glucose, etc.; the other is new carbon sources, mainly biodegradable polymers Materials, including natural cellulose materials, such as straw, rice husk, bark, newspaper, etc.,...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/10C02F3/34
CPCC02F3/00C02F3/105C02F3/106C02F3/107C02F3/34C02F3/104C02F2003/001C02F2003/003C02F2305/06Y02W10/10
Inventor 黎鹏王霞侯克锁曹亚丽王磊周超吴良杨力恺赵雨
Owner 华设设计集团环境科技有限公司
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