More than 100,000 weapons were handed to police in England, Scotland and Wales during a national knife amnesty.
Knives are being turned into reinforcement rods
During the five-week amnesty, which ended on 30 June, people could dispose of knives in secure bins without being prosecuted for possession.
The Association of Chief Police Officers' Tony Melville thanked everyone who made use of the amnesty.
"Every knife that is taken off our streets is one that cannot be used to kill, maim or intimidate," he said.
Mr Melville, Acpo's lead official on knife crime and assistant chief constable of Devon and Cornwall, said the move had helped make communities into safer places.
"The amnesty is certainly a step in the right direction and I hope it will prove to be a catalyst in changing the culture of routine knife possession, minimising the opportunity for the serious harm that can follow from the violent use of a knife," he added.
Across England and Wales, a total of 89,864 weapons were handed in to police stations.
On Friday, the Metropolitan Police will recycle thousands of knives at a metal recycling plant in Hertfordshire.
Around 8,000 knives surrendered to police in the capital will be crushed and the metal will then be sent to Cardiff and used to make reinforcement rods for concrete blocks in new buildings.
To build on the success, the Home Office said it had made available £500,000 for police forces in England and Wales for measures such as high visibility police patrols in knife crime hotspots and weapons awareness programme in schools.
In Scotland, the knife amnesty was part of a year-long anti-violence campaign called Safer Scotland.
North of the border 12,645 knives and other weapons were surrendered during the five-week amnesty, it was announced last week. The 220 bins across the country contained an array of weapons including lock knives, machetes, swords, meat cleavers, axes and bayonets.
The government says it is encouraging police forces to reduce knife crime through measures including:
Weapon awareness programmes for schools and youth groups
Leaflet and poster campaigns aimed at young people
Working with retailers to prevent them selling knives to under 16s
Encouraging licensed premises to scan customers for knives
Greater use of magnetic searches in public places such as bus and train stations
Use of intelligence to target people thought to be carrying knives
Home Office Minister Vernon Coaker said the government would continue working "in a number of ways" with police and local communities to tackle knife crime.
"I think people are particularly pleased about the fact that schools will now have the opportunity to search for knives where there's a need to do that," he told BBC News.
"It will help us in tackling knife crime in our communities and in our schools and is an important part of our strategy."