Papermaking wastewater treatment agent and method for treating papermaking wastewater by using same
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A wastewater treatment agent and technology for papermaking wastewater, which is applied in the process of wastewater treatment, water/sewage treatment, water treatment parameter control, etc., to achieve the effects of reducing dosage and water treatment costs, not easy to break up, and wide application.
Inactive Publication Date: 2018-03-02
GUANGDONG PAPER IND RES INST
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Embodiment 1
[0026] Weigh 2 kg of polyferric sulfate, 3 kg of anionic polyacrylamide, 0.2 kg of activated carbon, 4 kg of bentonite and an appropriate amount of water, and add them into a stirring reaction kettle with a stirring rate of 300r / min, a heating temperature of 60°C, and stir for 30 minutes to mix well , to obtain papermaking wastewater treatment agent.
[0027] The papermaking wastewater is treated according to the treatment process in the invention, and the chemical oxygen demand (COD), suspended solids (SS) and chromaticity of the papermaking wastewater are detected.
Embodiment 2
[0029] Weigh 2 kg of polyferric sulfate chloride, 3 kg of cationic polyacrylamide, 0.2 kg of activated carbon, 4 kg of diatomaceous earth and an appropriate amount of water, and add them into a stirred reactor with a stirring rate of 300r / min and a heating temperature of 70°C. Mix evenly for 50 minutes to obtain a papermaking wastewater treatment agent.
[0030] The papermaking wastewater is treated according to the treatment process in the invention, and the chemical oxygen demand (COD), suspended solids (SS) and chromaticity of the papermaking wastewater are detected.
Embodiment 3
[0032] Weigh 3 kg of polyferric sulfate, 4 kg of cationic polyacrylamide, 0.2 kg of activated carbon, 3 kg of rectorite treated with cetyltrimethylammonium bromide and an appropriate amount of water, and add them to the reactor with stirring. 300r / min, heating temperature 60°C, stirring for 40min to mix evenly, to obtain papermaking wastewater treatment agent.
[0033] The papermaking wastewater is treated according to the treatment process in the invention, and the chemical oxygen demand (COD), suspended solids (SS) and chromaticity of the papermaking wastewater are detected. Example 4
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Abstract
The invention discloses a papermaking wastewater treatment agent and a method for treating papermaking wastewater by using same. The papermaking wastewater treatment agent is prepared from an iron ionflocculant, a polyacrylamide flocculant, activated carbon, phyllosilicate, and the like. The method for treating the papermaking wastewater comprises the following steps: (1) adding lime milk into the papermaking wastewater, and adjusting the pH value to 7-11; then, adding the papermaking wastewater treatment agent and stirring; (2) when large flocculation is formed in the wastewater, stopping stirring, standing for settling, separating floccules in circulating water, and enabling the treated wastewater to enter next circulation for treating; (3) measuring the chemical oxygen demand (COD), suspended solids (SS) and chrominance index of the treated wastewater. The papermaking wastewater treatment agent disclosed by the invention has a good treatment effect on the papermaking wastewater, and is good in stability; the water quality of the papermaking wastewater treated by using the papermaking wastewater treatment agent meets emission standards.
Description
technical field [0001] The invention belongs to the field of industrial wastewater treatment, and in particular relates to a papermaking wastewater treatment agent and a method for treating papermaking wastewater. Background technique [0002] The paper industry discharges a large amount of wastewater during the production process, which seriously endangers the living environment of aquatic organisms, plants and human beings, and destroys the utilization value of water resources. At present, many paper industries at home and abroad use chemical oxidation method + flocculation sedimentation method or flocculation sedimentation method + anaerobic-aerobic biochemical method as a method for treating wastewater. It is inevitable to use water treatment chemicals to control water pollution, and flocculants are the most used category in water treatment. In the treatment of papermaking wastewater, flocculation gathers colloidal substances and small suspended particles into large agg...
Claims
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