{"id":5075,"date":"2020-12-17T08:59:34","date_gmt":"2020-12-17T08:59:34","guid":{"rendered":"http:\/\/hydroitalia.com\/impianti\/physical-chemical-systems\/"},"modified":"2024-03-27T14:32:06","modified_gmt":"2024-03-27T14:32:06","slug":"physical-chemical-systems","status":"publish","type":"impianti","link":"https:\/\/www.hydroitalia.com\/en\/systems\/physical-chemical-systems\/","title":{"rendered":"Physical \u2013 chemical systems Industrial wastewater treatment"},"content":{"rendered":"\n

Normally physical-chemical systems are used for industrial wastewater treatment<\/strong><\/p>\n\n\n\n

Industrial waste purification with physical-chemical treatment<\/h2>\n\n\n\n

The continuous physical-chemical treatment consists in purifying different types of effluents, at a constant flow rate for optimal purification efficiency. A typical purification cycle may include, but is not limited to, the following phases: <\/p>\n\n\n\n

STORAGE AND REDELIVERY OF DILUTED WASTE FROM CONTINUOUS WASHING<\/strong> <\/p>\n\n\n\n

The washings coming from the various processes flow into a collection tank. From here both the water and industrial wastewater are taken up by an electric pump and sent to the first mixing reactor <\/p>\n\n\n\n

STORAGE AND REDELIVERY OF EXHAUSTED CONCENTRATES<\/strong> Discontinuous wastewater coming from occasional drains of concentrated baths, from demineralization eluates or from specific upstream pre-treatments flow into a collection tank. From the tank the water is taken and sent, only in the presence of the primary flow of the washing, to the first mixing reactor. <\/p>\n\n\n\n

PH AUTOMATIC CONTROL\/COAGULATION PHYSICAL-CHEMICAL TREATMENT <\/strong><\/p>\n\n\n\n

The water flows into the first mixing reactor to better homogenize the various types of wastewater and added reagents, such as e.g. coagulants<\/a>, products for pH control<\/a>, etc. <\/p>\n\n\n\n

PHYSICAL-CHEMICAL TREATMENT OF SLUDGE THICKENING <\/strong><\/p>\n\n\n\n

The sewage from the previous treatment is conveyed to a reactor with an electro-mixer to keep the solution homogeneous by favoring the aggregation of sludge flakes, thanks to the dosage of specific flocculating products<\/a>. <\/p>\n\n\n\n

PHYSICAL-CHEMICAL TREATMENT OF SLUDGE SEDIMENTATION <\/strong><\/p>\n\n\n\n

From the reactor the wastewater will flow into the sludge sedimentation section. The clarified water, through a weir, flows to the redelivery tank while the separated sludge collects at the bottom of the decanter. <\/p>\n\n\n\n

CLARIFIED EXHAUSTS RECOVERY <\/strong><\/p>\n\n\n\n

From the sedimentation treatment the clarified water flows falling into a tank, from which it is taken to be sent to the subsequent post-treatment phases to complete the purification process. Some possible options are listed below: <\/p>\n\n\n\n

\u2013 Filtration of water on quartz <\/strong><\/em> <\/p>\n\n\n\n

The filtration station is necessary to eliminate from treated water the suspended bodies; In this sense, mixtures with different granulometry of specific filtering products are used. <\/p>\n\n\n\n

\u2013 Adsorption of water on active carbons<\/strong><\/em> <\/p>\n\n\n\n

At the filtration outlet, the water flows into the adsorption section. This section is useful for breaking down traces of residual organic substances such as mineral oils, surfactants and solvents and uses different types of activated carbon with a highly specific surface. <\/p>\n\n\n\n

\u2013 Ph automatic final correction<\/strong><\/em><\/p>\n\n\n\n

At the end of the post-treatment section, the wastewater can flow into the reactor for final correction of the pH value. The pH corrector is dosed to adjust the pH to the correct value foreseen for the final discharge. <\/p>\n\n\n\n

\u2013 Sludge thickness and treatment<\/strong><\/em> <\/p>\n\n\n\n

The sludge accumulated in the lower hopper of the sedimentation tank is sent to the thickening section. From here the sludge is taken and sent to the dehydration section for a significant reduction in volume and consequent savings on disposal costs. The drained water will be sent back by gravity to the storage tank.<\/p>\n","protected":false},"excerpt":{"rendered":"

Industrial waste purification.<\/p>\n","protected":false},"featured_media":2323,"template":"","meta":[],"categories":[],"tags":[78,80,83,81,75,84,86,77,87,79,82,89],"acf":[],"yoast_head":"\nIndustrial wastewater treatment: Hydro Italia physical-chemical systems<\/title>\n<meta name=\"description\" content=\"Hydro Italia physical-chemical systems are used for the treatment of industrial wastewater. 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